1896195989 has 8 divisors (see below), whose sum is σ = 1908748800. Its totient is φ = 1883657776.

The previous prime is 1896195971. The next prime is 1896196007. The reversal of 1896195989 is 9895916981.

It is an interprime number because it is at equal distance from previous prime (1896195971) and next prime (1896196007).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1896195989 - 2⁸ = 1896195733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1896195949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398267 + ... + 402999.

It is an arithmetic number, because the mean of its divisors is an integer number (238593600).

Almost surely, 2^1896195989 is an apocalyptic number.

It is an amenable number.

1896195989 is a deficient number, since it is larger than the sum of its proper divisors (12552811).

1896195989 is a wasteful number, since it uses less digits than its factorization.

1896195989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7299.

The product of its digits is 12597120, while the sum is 65.

The square root of 1896195989 is about 43545.3325742266. The cubic root of 1896195989 is about 1237.7351976044.

The spelling of 1896195989 in words is "one billion, eight hundred ninety-six million, one hundred ninety-five thousand, nine hundred eighty-nine".